Abstract:
In a control device, the scan control unit controls a scanning operation in which data is to be generated by reading a document. The data format selecting unit selects one of a first format or a second format different from the first format as a data format in which the data is to be generated. The resolution setting unit sets a reading resolution based on the data format. The resolution setting unit sets a first resolution as the reading resolution when the data format selecting unit selects the first format whereas the resolution setting unit sets a second resolution different from the first resolution as the reading resolution when the data format selecting unit selects the second format. The scan control unit controls the scanning operation to read the document in the reading resolution set by the resolution setting unit.
Abstract:
An image reading apparatus includes a sensor and a control unit. The sensor includes including a photoelectric conversion unit configured to generate a charge, a first transfer unit configured to transfer the generated charge from the to an output unit, and the output unit transfers the charge to an outside of the sensor, and a second transfer unit configured to transfer the charge from the first transfer unit to a drain unit to drain the charge. The control unit configured to execute control for transferring the charge to the drain unit after transferring the charge outside the sensor, based on a size of document to be read.
Abstract:
An image reading device includes a clock generator, an image sensor, a plurality of switches having a first switch and a second switch, a reader, a first controller, and a second controller. The clock generator generates a first clock signal having a first cycle and a second clock signal having a second cycle shorter than the first cycle. The image sensor detects an image formed on a document to generate an image signal. The image signal is inputted into the first switch and the second switch by rotation. The first switch and the second switch is capable of switching to simultaneously or alternately output the image signal in synchronization with the first clock. The reader reads the image signal outputted from the first switch and the second switch. The first controller controls the first switch to output the image signal to the reader during a first period and to control the second switch to output the image signal to the reader during a second period. The second controller controls the clock generator to generate the first clock signal during the first period and the second period and to generate the second clock signal during a third period that is between the first period and the second period and that is longer than a predetermined period mT and shorter than (k×T1) The T1 is the first cycle. The k is a minimum integer that satisfies mT
Abstract:
An image reading apparatus is provided with an optical reading device for scanning a stationary original placed on a platen to read image on the original; a drive device for moving the optical reading device at the first moving speed and the second or slow moving speed; a detection device for determining a type of image data read by the optical reading device as either the first type, i.e. monotone data, or the second type, i.e. color data; and a scan control device for obtaining and storing image data while scanning a document at the first moving speed. A switching control device switches the drive device to the second moving speed when the detecting device determines the image data read at the first moving speed to be the second type.
Abstract:
A document scanning device reads an image on a document while scanning the image, and generates image data based on the image. The document scanning device selects and sets a scanning speed in accordance with a transfer mode used when the document scanning device transfers the image data to another apparatus. The document scanning device controls the amount of generated image data by using the set scanning speed to successively read the image, whereby optimal transfer processing in accordance with the transfer mode can be performed. By switching a transfer path in accordance with the type of the read data, i.e., binary data per pixel or multilevel data per pixel, efficient data transfer can be performed.
Abstract:
A document scanning device reads an image on a document while scanning the image, and generates image data based on the image. The document scanning device selects and sets a scanning speed in accordance with a transfer mode used when the document scanning device transfers the image data to another apparatus. The document scanning device controls the amount of generated image data by using the set scanning speed to successively read the image, whereby optimal transfer processing in accordance with the transfer mode can be performed. By switching a transfer path in accordance with the type of the read data, i.e., binary data per pixel or multilevel data per pixel, efficient data transfer can be performed.
Abstract:
An image reading apparatus in which extended image reading time is prevented when high quality image data is obtained, which image data is corrected by invisible light such as infrared light which is transmitted through an original. In a CCD scanner, visible light emitted from a light source is irradiated onto a photographic film. Infrared light emitted from the light source is reduced by an IR light reducing filter to be irradiated onto the photographic film. Visible light which has been transmitted through the photographic film is irradiated on a linear CCD by a lens unit, and the infrared light is reflected by a dichroic mirror to be irradiated on the linear CCD. Accordingly, the reading of invisible light can be effected at the same time that the reading of visible light is effected. It is therefore possible to prevent image reading time from becoming long due to the time required for the receiving of invisible light.
Abstract:
An imaging apparatus and method for a single-pass, duplex-capable scanner having increased simplex scanning speed. The imaging apparatus has a first image reading element, a first image processing component, and a second image processing component. When the imaging apparatus is in a simplex mode, a data switch is configured to alternately pass image data acquired through the first image reading element to the first image processing component and the second image processing component.
Abstract:
A bi-directional transmission mechanism is provided for an image scanner to increase the scanning speed. The bidirectional transmission mechanism provides a first transmission device for driving a sheet table in a first direction, and a second transmission device disposed below the sheet table for driving an image reading device in a second direction. The two transmission devices are moving towards opposite directions and at the same time when the scanning operation is enabled. The present invention mainly encompasses a sheet table for placing a document sheet. A first transmission device is provided for supporting and connecting to the sheet table for driving the sheet table from a first direction to a second direction. An image reading device disposed under the sheet table reads the image information of the document sheet. And a second transmission device disposed in parallel to the first transmission device is provided for supporting and driving the image reading device from the second direction to the first direction at the same time when the scanning operation is enabled. Since the two transmission devices are moving towards each other, the scanning speed will be at least doubled if they are driven by step motors of the same speed.
Abstract:
Apparatus for exposing an image recording medium, the apparatus comprising a radiation source; a switch comprising an input arranged Lo receive radiation from the radiation source, and a plurality of imaging outputs, wherein the switch selectively routes the radiation received at the input to a selected one of the imaging outputs; and a device for directing the radiation from each imaging output onto the image recording medium to expose the image recording medium.